187 
1. Aspidoecia Normani Giard and Bonnier. 
(Pl. XU, fig. 3a—3n)?). 
Aspidoecia Normanit Giard and Bonnier, Compt.-rend. de l’Acad. d. Sciences, 29 avril 1889. 
_ —  iard and Bonnier, Bull. scient. de la France et de la Belgique, T. XX, 1889, 
p. 342 etc., pl. X—XI. 
= _- Giard and Bonnier, Bull. scient. d. 1. Fr. et d. 1. Belg. T. XXV, 1895, p. 479. 
FEMALE. The specimen represented in fig. 3b is an adult female (with two 
rudimentary ovisacs and three attached larvee), which is 65 mm. long and °75 mm. broad 
and is attached to Hr. serratus G.O.S.; the specimen represented in fig. 3c and taken on 
the same species (with two males, x, hinged by frontal threads) is 536 mm. long and ‘685 mm. 
broad; the individual drawn in fig. 3f and fig. 3g and found on Er. abyssorum G.O.S8. is 
*82 mm. long, 1:03 mm. broad and one of the largest in hand. Fig. 3h shows the head, 
seen from below, cleaned with caustic potash, so as to show the antennulze, whereas fig. 3d 
shows the head partly in front, as it is attached to the female by a large adhesive plate 
(s) which covers the antennule. Far to the front on the head, beneath the skin, and far 
apart from each other appear a pair of peculiar rather large hollow spaces (t) with a strange 
refraction of light, somewhat like that of a viscous substance, but what they are meant for 
I cannot make out. In the specimen cleaned with potash the antennule (fig. 3h,a) are seen 
to consist of one single, comparatively broad joint with convex inner margin, whereas the 
outer margin is furnished with several short sete. In most individuals the genital rings 
are closer together than the length of the diameter of each (fig.3e); in the larger, but not 
in the smaller, younger specimens living on Lr. abyssorwm, they are further apart than 
this line (comp. the remarks below). 
MALE. The smallest specimen from Hr. serratus is 138mm. long (fig. 31), another 
specimen from the same species is 147 mm. long and °120 mm. broad (fig. 3k); a specimen from Er. 
abyssorum is ‘158mm. in length. The frontal border is strongly produced in all specimens 
and slightly emarginate in the middle. The frontal thread is even, though a little expanded 
at its distal end; in the specimen drawn in fig. 3k, it is scarcely half the length of the 
body, im another specimen (fig. 3a, m) between twice and three times the length of the animal. 
OVISACS. Mentioned in the diagnosis of the genus. 
LARVA. Of larve I have found only a few specimens, one of them attached at 
the front to the carapace of a host (fig. 3a, 1), the others fastened to females, and about to 
develop into males. So the shape of a free specimen cannot be described. Proportionally 
the cephalothorax of the attached specimens is not broad; in one of them its breadth is 
12mm., the length of the body 20mm. Antennule 3-jointed, the olfactory seta about half 
the length of the cephalothorax, minus its free segment (fig. 3m). Antenne fairly short, 
1) On pl. XII the name of the species is written Normanni instead of Normani. 
94* 
